51421471 has 8 divisors (see below), whose sum is σ = 51932160. Its totient is φ = 50913528.

The previous prime is 51421463. The next prime is 51421483. The reversal of 51421471 is 17412415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51421471 - 2³ = 51421463 is a prime.

It is a super-3 number, since 3×51421471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60870 + ... + 61708.

It is an arithmetic number, because the mean of its divisors is an integer number (6491520).

Almost surely, 2^51421471 is an apocalyptic number.

51421471 is a deficient number, since it is larger than the sum of its proper divisors (510689).

51421471 is a wasteful number, since it uses less digits than its factorization.

51421471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its digits is 1120, while the sum is 25.

The square root of 51421471 is about 7170.8765851882. The cubic root of 51421471 is about 371.8617414099.

Adding to 51421471 its reverse (17412415), we get a palindrome (68833886).

The spelling of 51421471 in words is "fifty-one million, four hundred twenty-one thousand, four hundred seventy-one".